Plastering-machine.



W. H. REIMER.

PLASTBRING MACHINE,

APPLICATION FILED MAY 25, 1912.

5 PET //////fii INVENTOR W/Lu/m H. REIMER.

A TTOR/VEY Patented Feb. 18, 1913.

WILLIAM H. REIMER, 0F

DETROIT, MICHIGAN, ASIGNOR OF ONE-HALF TO JOHN L. H-

LECHNER, OF DETROIT, MICHIGAN.

PLASTERING-MACHINE.

Specification of Letters Patent.

\ 'Application filed May 25, 1912. Serial No. 699,628. i

To all whom it may concern:

Be it known that I, WILLIAM H. REIMER, a citizen of the United States, residing at Detroit, in the county of Wayne, State of Michigan, have invented certain new and useful Improvements in Plastering- Machines; and I do declare the following to be a full, clear, and exact description of'the invention, such as will enable others skilled in the art to which it appertains to make and .use the same, reference being had to the accompanying/ drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to plastering machines, andconsists in the construction andarrangement of parts hereinafter more fully set forth and pointed out particularly in the claims. I

The object of the invention is to provide simple and efficient means for mixing the ingredients of plaster and other cementitious matter and feeding the plaster or cement through a flexible conductor to the desired point of application, provision being made for forcibly feeding the material the entire distance through the flexible conductor between the mixing cylinder and the trowel, and for spreading the mate-rial onto the surface to be coated through themedium of a rotary trowel, through the center of which the material is conveyed.

The above object is attained by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a general view partly in section, illustrating one embodiment of my invention. Fig. 2 is an enlarged fragmentary view in section showing the discharge end of the flexible conductor, the flexible rotary conveyer therein, and a rotary trowel connected to said conductor to be driven thereby, and having a central aperture through which the material may pass onto the surface to be coated. Fig. 3 is a plan view of the rotary trowel shown in section in Fig. 2. Fig. 4 is an enlarged fragmentary view partly in section, .illustrating the manner of connecting the rotary trowel to the end of the flexible conductor, said trowel being apertured for the passage of the material theret-hroughf Fig. 5 is a plan view of the trowel shown in Fig. 4.

Referring to the drawings by the characters of reference marked thereon, l desig- Patented Febl 18,1913.

nates a skid upon which is mounted a mixing cylinder 2, beingsupported upon the blocks 3 secured to the skid. Within the mixing cylinder 2 is a shaft 4 which extends through the end 5 thereof and is supported in the bearings 6 and 7. Between said bearlngs on said shaft is mounted a driving wheel 8, which may be driven from any suitablesource of power not shown. The inner end of'the shaft 4 is supported in a bearing 9 carried by the hanger 10 which is suspended from the wall of the mixing cylinder. Upon the shaft 4 within the cylinder is a mixing and feeding screw 11. Oommunicating with the mixing cylinder above the screw is a hopper 12. The delivery end of the cylinder is tapered, as shown at 13,

for ordinary use there-is connected a square trowel '16, having a central aperture 17' therethrough which is surrounded by a rojecting sleeve 18. The free end'of the exible conductor 15 is introduced into the sleeve 18 of said trowel to detachably mount the trowel thereon, the opening 17 throu h said trowel registering with the opening t rough said conducton It has been found difficult to force material of the consistency and specific gravity of plaster and cement through alon conductor by pressure appliedonly at ti duct end of said conductor, because of the fact that the material becomes packed with in the conductor and cannot be moved.-' In order to insure a continuous and even feed ing of the material through the conductor from the mixing cylinder to'the trowel, I employ a. flexible conveyer 19 which lies e in within and extends throughoutthe entire interior of. econductor 15,;pmducing-in 'efi'ect a hollow flexible conveyer within a i flexible conductor. To provide for rotating clearly shown in Fig. 3, wherebysaid con;

1 trowel serving to spread the plaster evenly veyer is caused to turn with said shaft.

ductor '15..

..Where the apparatus is used'for mixing and applying plaster the lime, sand and water are introduced into the cylinder 2 through the hopper 12, and the shaft 4 revolved to cause the screw 11' tomix said Inaterials and feed them forward to the delivery end ofthe cylinder. As the mixing screw feeds said materials forward they encounter the tapered portion 13 of the cylinder and are directed into the end of the con- The rotation of the flexible conveyor 19 which passes through said conductor causes the plaster or other lastic mixture to constantly feed into sai conductor as it is urged forward by the feeding j "screw 11, affording a continuous feed for 7 said; material throughout the entire length ofthe conductor, therebypreventing a possi- 2 5 bility' of theconductor ecoming clogged, andat the same time continuing the mixing processuntil the mass is delivered at the trowel. To enable a proper application of the plaster or similar material, the trowel is provided upon the face thereof with the parallel" gage strips I 20, which are held against the surface to be coated,-and which regulate the depth or thickness of the plaster' as it is applied, said trowel being held with suflicient force against the wall or ceiling to cause the plaster to flow laterally over the surface being coated between the guide strips as the trowel is moved along, enabling the plaster to be quickly and evenly applied. Because of the flexibility of the conductor 15, the trowel 16 may be manipulated at will, and may be moved about by the operator so as to enable him to cover with plastef a side wall or ceiling irrespective of the location-of'themixing cylinder and without changing the position thereof.

This arrangeinentmakes it unnecessary to continually move the mixing cylinder dura ing the operation of plastering aroom.

511 putting; on a'putty coat in plastering,

'r' to produce the: spreading eifect of 7 a hand' trowel and to properly distribute sa'id putty coat =even1y over the surface, a

'erally projectinghollow stem 22. Formed "throughs'aid-stem. and through the face of f .'rota'ry circular tro'wel 21 is employed, having asmoothface andp'rovided with a lat- -the-trowel is an aperture 23. In the ex- 4 1 ;terior ofthe hollow stem 22 is cut a spiral thread of the trend of the conveyer 19. To

. attach the trowel 21 to said conveyer so that it shall :r e'ceive motion therefrom, the stem 22 is screwed into said conveyer as shown in Figi2ythereby. effecting such a connection betweensaidipartsas to cause the trowel to conductor, means rotate when the conveyer 19 revolves. When using the circular rotary trowel 21 the rotation of the conveyer 19 will force the plaster through the. opening 23 and onto the'face of-the'trowel, the rotary movement of the this work, holding the trowel againstthe surface with sufficient force to effect a proper spreading of the. finishing coat of plaster.

With this device cement forconcrete sidewalks and other structures ma be perfectly laid, obviating the necessity o wheeling the cement from the mixing bed to the place of use, as commonly practised. f

Having thus fully set forth my invention, what I =claim as new, and desire to secure by Letters Patent, is:--- e l 1 v i 1. In a'plastering machine, a mixing cylinder, a mixing and conveying screw there oventhe surface, the operator, to accomplish I i cylinder,.' a flexible conveyer extendingthrough said "conductor, and means at the end of the conductor for applying the material fed therethrough.

' 2. A plastering machine comprising a mixing cylinder, a shaft within the cylinder having a mixing screw thereon, a flexible conductor leadin from said cylinder, means for spreading p astic material at the free end of said conductor, and a flexible rotary conveyer connected to the'shaft in said cylinder andextending throughout the entire length of said conductor.

3. In a plastering machine, a mixing cyl inder, a flexible conductor leading therefrom, means at the end of said conductor for spreading plastic material, a-flexible conveyer extending or forcing material into said conductor, and -.means for imparting a rotary movement to said flexible conveyer.

4. In a plasterin 'machine,a mixing cyl L longitudinally of said ioo inder, a mixing an conveying screw there-j in, said cylinder having a tapered end,-a flexi= ble conductor leadingfrom the tapered end of said cylinder, a'- flexible conveyerpassing throughthe conductorand driven from the shaftof sai'disorew, and-a rotary trowel at r 115 the end of the flexible:conductor-connected to said rotary conveyerto revolve therewith.

5. A plaster-ing machine comprising, a

mixing cylinder, a mixing and conveying screw therein,a'flexible conductor leading if .120

from said cylinder, 3; flexible conveyer passing through said conductor and driven from, a theshaft of; said screw, and a trowel at the I I endof 'said-c'onveyer, said trowel having a j central aperture registering withpthe open-y ing insaid conductor.through which the plastic material is fed. i

. .6.- In aplastering'machlneya I inder, a flexible conductor extending from said-cylinder and adaptedto receive plastic material, means at the end of said conductor 85. in, a flexible conductor leading from. saidfor applying said material, and means conductorfor conveying plastic material for continuously conveying said material from end to end thereof. 10 throughout the entire length of said con- In testimony whereof, I sign this specifiduetor. cation in the presence of two witnesses.

7. In a plastering machine, a relatively WILLIAM H. REIMER.

long flexible conductor, means for introduc- Witnesses:

ing plastic material into said conductor, and E. S. WHEELER,

2. flexible conveyer co-extensive with said M. E. BROESAMLE. 

